Respuesta :
Answer:
Robert is 7 years old and Maria is 14 years old.
Step-by-step explanation:
You can use 2 variables: m and r and write 2 equations:
m = r +7
m + 2 = 4( r -3)
So 3 * r = 21 or r= 7
Answer:
Robert is 7 years old and Maria is 14 years old.
Step-by-step explanation:
You can use 2 variables: m and r and write 2 equations:
m = r +7
m + 2 = 4( r -3)
So 3 * r = 21 or r= 7